This research was compiled based on Factorial Randomized Group Design (RBD) consisting of 2 factors with 3 groups to obtain 36 experimental units. Each unit consists of 12 plants, 3 plants are taken as samples, so that 432 plants in total with 144 plants as samples. The first fator is the treatment of various types of mulch with 4 levels, namely A1 = no mulch, A2 = mulch rice husk, A3 = mulch banana stem and A4 = black silver plastic mulch. The second factor is the treatment of N, P and K anoragnik fertilizer with 3 levels, namely B1 = 15 g N, 15 g P2O5, 15 g K2O, B2 = 20 g N, 20 g P2O5, 20 g K2O and B3 = 25 g N, 25 g P2O5, 25 g K2O. The results of the study that the treatment of various types of mulch showed the dominant weeds in the cultivation of Arabica coffee in Indonesia was Borreria alata, followed by Elausine indica and Ageratum conyzoides. While the lowest weed biomass was obtained in black silver plastic mulch or N, P and K 15g: 15g: 15g.

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